Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3
Pronounced millennial-scale climate variability during marine isotope stage 3 (MIS3) is considered to be linked to changes in the state of the Atlantic meridional overturning circulation (AMOC), i.e., a warm interstadial/cold stadial state corresponds to a strong/weak AMOC. Based on a series of fres...
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Online Access: | https://doi.org/10.1002/2014GL063003 https://archimer.ifremer.fr/doc/00351/46267/46052.pdf https://archimer.ifremer.fr/doc/00351/46267/ |
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fttriple:oai:gotriple.eu:10670/1.gzszw7 2023-05-15T17:32:44+02:00 Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3 Zhang, Xiao Prange, Matthias Merkel, Ute Schulz, Michael https://doi.org/10.1002/2014GL063003 https://archimer.ifremer.fr/doc/00351/46267/46052.pdf https://archimer.ifremer.fr/doc/00351/46267/ en eng Amer Geophysical Union doi:10.1002/2014GL063003 10670/1.gzszw7 https://archimer.ifremer.fr/doc/00351/46267/46052.pdf https://archimer.ifremer.fr/doc/00351/46267/ other Archimer, archive institutionnelle de l'Ifremer Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2015-03 , Vol. 42 , N. 6 , P. 1903-1911 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1002/2014GL063003 2023-01-22T17:55:07Z Pronounced millennial-scale climate variability during marine isotope stage 3 (MIS3) is considered to be linked to changes in the state of the Atlantic meridional overturning circulation (AMOC), i.e., a warm interstadial/cold stadial state corresponds to a strong/weak AMOC. Based on a series of freshwater hosing/extraction experiments with the state-of-the-art Community Climate System Model version 3, we construct a global spatial fingerprint of oceanic temperature anomalies in response to AMOC changes under MIS3 boundary conditions. Highest sensitivity to AMOC changes, especially in summer, is found in northeastern North Atlantic sea surface temperature, but a characteristic temperature fingerprint is also found at subsurface levels. After testing significance of the linear sea surface temperature (SST)-AMOC regressions, the model results are combined with paleo-SST records to estimate the magnitude of millennial-scale Dansgaard-Oeschger AMOC variations during MIS3. The results suggest a mean difference in AMOC strength between interstadial and (non-Heinrich) stadial states of 9.21.2Sv (1 sigma). Text North Atlantic Unknown Geophysical Research Letters 42 6 1903 1911 |
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geo envir Zhang, Xiao Prange, Matthias Merkel, Ute Schulz, Michael Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3 |
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geo envir |
description |
Pronounced millennial-scale climate variability during marine isotope stage 3 (MIS3) is considered to be linked to changes in the state of the Atlantic meridional overturning circulation (AMOC), i.e., a warm interstadial/cold stadial state corresponds to a strong/weak AMOC. Based on a series of freshwater hosing/extraction experiments with the state-of-the-art Community Climate System Model version 3, we construct a global spatial fingerprint of oceanic temperature anomalies in response to AMOC changes under MIS3 boundary conditions. Highest sensitivity to AMOC changes, especially in summer, is found in northeastern North Atlantic sea surface temperature, but a characteristic temperature fingerprint is also found at subsurface levels. After testing significance of the linear sea surface temperature (SST)-AMOC regressions, the model results are combined with paleo-SST records to estimate the magnitude of millennial-scale Dansgaard-Oeschger AMOC variations during MIS3. The results suggest a mean difference in AMOC strength between interstadial and (non-Heinrich) stadial states of 9.21.2Sv (1 sigma). |
format |
Text |
author |
Zhang, Xiao Prange, Matthias Merkel, Ute Schulz, Michael |
author_facet |
Zhang, Xiao Prange, Matthias Merkel, Ute Schulz, Michael |
author_sort |
Zhang, Xiao |
title |
Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3 |
title_short |
Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3 |
title_full |
Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3 |
title_fullStr |
Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3 |
title_full_unstemmed |
Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3 |
title_sort |
spatial fingerprint and magnitude of changes in the atlantic meridional overturning circulation during marine isotope stage 3 |
publisher |
Amer Geophysical Union |
url |
https://doi.org/10.1002/2014GL063003 https://archimer.ifremer.fr/doc/00351/46267/46052.pdf https://archimer.ifremer.fr/doc/00351/46267/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Archimer, archive institutionnelle de l'Ifremer Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2015-03 , Vol. 42 , N. 6 , P. 1903-1911 |
op_relation |
doi:10.1002/2014GL063003 10670/1.gzszw7 https://archimer.ifremer.fr/doc/00351/46267/46052.pdf https://archimer.ifremer.fr/doc/00351/46267/ |
op_rights |
other |
op_doi |
https://doi.org/10.1002/2014GL063003 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
6 |
container_start_page |
1903 |
op_container_end_page |
1911 |
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1766131000111267840 |